JP2019142324A - Airbag device - Google Patents

Airbag device Download PDF

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Publication number
JP2019142324A
JP2019142324A JP2018027538A JP2018027538A JP2019142324A JP 2019142324 A JP2019142324 A JP 2019142324A JP 2018027538 A JP2018027538 A JP 2018027538A JP 2018027538 A JP2018027538 A JP 2018027538A JP 2019142324 A JP2019142324 A JP 2019142324A
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Prior art keywords
airbag
vent hole
airbag body
deployed
lid
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JP2018027538A
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JP7053304B2 (en
Inventor
智有 斉藤
Tomoari Saito
智有 斉藤
克弥 村松
Katsuya Muramatsu
克弥 村松
勝 森竹
Masaru Moritake
勝 森竹
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Nihon Plast Co Ltd
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Nihon Plast Co Ltd
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Priority to JP2018027538A priority Critical patent/JP7053304B2/en
Priority to CN201910073117.5A priority patent/CN110182164B/en
Priority to US16/270,696 priority patent/US20190256034A1/en
Publication of JP2019142324A publication Critical patent/JP2019142324A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/239—Inflatable members characterised by their venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23382—Internal tether means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/239—Inflatable members characterised by their venting means
    • B60R2021/2395—Inflatable members characterised by their venting means comprising means to control the venting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

To provide an airbag device that can appropriately ensure exhaust performance when an airbag body is fully inflated and deployed by facilitating control of an internal pressure of the airbag body when the airbag body is fully inflated and deployed.SOLUTION: An airbag device 10 comprises an airbag body 15 formed in a bag shape having a vent hole 14, and a lid body 16 disposed outside the airbag body 15. The airbag device 10 also comprises a coupling member 17 disposed inside the airbag body 15, whose one end 17b is bonded to the airbag body 15 and the other end 17c is bonded to the lid body 16. A length LN from the one end 17b to the other end 17c of the coupling member 17 is set so that a clearance CL is formed between the vent hole 14 and the lid body 16 when the airbag body 15 is fully inflated and deployed.SELECTED DRAWING: Figure 2

Description

本発明は、エアバッグ装置に関する。   The present invention relates to an airbag device.

従来から、自動車などの車両が衝突した際の衝撃から乗員を保護するエアバッグ装置が公知である（例えば、特許文献１）。   Conventionally, an airbag device that protects an occupant from an impact when a vehicle such as an automobile collides is known (for example, Patent Document 1).

このエアバッグ装置は、例えば、ベントホールを有する袋状に形成されたエアバッグ本体と、エアバッグ本体の外部に配設される蓋体と、を備える。このようなエアバッグ装置においては、連結部材によりエアバッグ本体と蓋体とが連結されており、エアバッグ本体のフル膨張展開時に連結部材が蓋体の一部をエアバッグ本体の内部に引き込むことにより、ベントホールが蓋体により密閉されるように構成される。   The airbag device includes, for example, an airbag main body formed in a bag shape having a vent hole, and a lid disposed outside the airbag main body. In such an airbag device, the airbag main body and the lid are connected by the connecting member, and the connecting member pulls a part of the lid into the airbag main body when the airbag main body is fully inflated and deployed. Thus, the vent hole is configured to be sealed by the lid.

特開２０１６−１３７１２号公報Japanese Patent Laid-Open No. 2016-13712

前述のようなエアバッグ装置においては、エアバッグ本体のフル膨張展開時に蓋体の一部がエアバッグ本体の内部に引き込まれてベントホールが蓋体により密閉されるため、エアバッグ本体のフル膨張展開時における蓄圧性能はよい。しかしながら、エアバッグ本体のフル膨張展開時にベントホールが蓋体により密閉されるため、エアバッグ本体のフル膨張展開時におけるエアバッグ本体の内圧の制御が難しい。   In the airbag apparatus as described above, since the lid body is partially drawn into the airbag body and the vent hole is sealed by the lid body when the airbag body is fully inflated and deployed, the airbag body is fully inflated. Accumulation performance at the time of deployment is good. However, since the vent hole is sealed by the lid when the airbag body is fully inflated and deployed, it is difficult to control the internal pressure of the airbag body when the airbag body is fully inflated and deployed.

そこで、本発明は、エアバッグ本体のフル膨張展開時におけるエアバッグ本体の内圧の制御を容易にすることにより、エアバッグ本体のフル膨張展開時における排気性能を適切に確保することができるエアバッグ装置を提供することを目的とする。   Therefore, the present invention facilitates control of the internal pressure of the airbag body when the airbag body is fully inflated and deployed, thereby ensuring adequate exhaust performance when the airbag body is fully inflated and deployed. An object is to provide an apparatus.

本発明に係るエアバッグ装置は、ベントホールを有する袋状に形成されたエアバッグ本体と、エアバッグ本体の外部に配設される蓋体と、エアバッグ本体の内部に配設され、一端がエアバッグ本体に接合され、他端が蓋体に接合される連結部材と、を備える。エアバッグ本体のフル膨張展開時にベントホールと蓋体との間に隙間が形成されるように連結部材の一端から他端までの長さが設定される。   An airbag device according to the present invention includes an airbag body formed in a bag shape having a vent hole, a lid disposed outside the airbag body, an interior of the airbag body, and one end thereof. A connecting member that is joined to the airbag body and whose other end is joined to the lid. The length from one end of the connecting member to the other end is set such that a gap is formed between the vent hole and the lid when the airbag body is fully inflated and deployed.

本発明に係るエアバッグ装置によれば、エアバッグ本体のフル膨張展開時におけるエアバッグ本体の内圧の制御を容易にすることにより、エアバッグ本体のフル膨張展開時における排気性能を適切に確保することができる。   According to the airbag device according to the present invention, by appropriately controlling the internal pressure of the airbag body when the airbag body is fully inflated and deployed, the exhaust performance when the airbag body is fully inflated and deployed is appropriately ensured. be able to.

本発明の実施形態に係るエアバッグ装置のフル膨張展開状態を示す斜視図である。It is a perspective view which shows the full inflated deployment state of the airbag apparatus which concerns on embodiment of this invention. 図１のエアバッグ装置の縦断面図である。It is a longitudinal cross-sectional view of the airbag apparatus of FIG.

以下、本発明の実施形態を図面と共に詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

本実施形態では、車両のステアリングホイールに設けられる運転席用エアバッグ装置を例示する。   In this embodiment, a driver's seat airbag device provided on a steering wheel of a vehicle is illustrated.

図１及び図２に示すように、エアバッグ装置１０は、全体として袋状に形成されたエアバッグ１１と、エアバッグ１１にガスを供給するインフレータ１２と、これらエアバッグ１１及びインフレータ１２等を保持する保持部材としてのリテーナ１３と、を備える。   As shown in FIGS. 1 and 2, an airbag device 10 includes an airbag 11 formed in a bag shape as a whole, an inflator 12 that supplies gas to the airbag 11, the airbag 11, the inflator 12, and the like. And a retainer 13 as a holding member to be held.

エアバッグ１１は、ベントホール１４を有するエアバッグ本体１５と、エアバッグ本体１５の外部に配設される蓋体１６と、エアバッグ本体１５と蓋体１６とを連結して、エアバッグ本体１５の内部に配設される連結部材１７と、を備える。   The airbag 11 includes an airbag body 15 having a vent hole 14, a lid body 16 disposed outside the airbag body 15, and the airbag body 15 and the lid body 16. And a connecting member 17 disposed inside.

エアバッグ本体１５は、単数又は複数の基布により袋状に形成される。本実施形態では、エアバッグ本体１５は、二枚の基布（基部パネル１８及び乗員側パネル１９）により形成されている。また、エアバッグ本体１５は、インフレータ１２のガス発生部が挿通されるガス導入用の開口部を有している。エアバッグ本体１５の形状や、ガス導入用の開口部の位置及び形状等は特に限定はされず、エアバッグ装置１０の仕様等に応じて適宜設定することが可能である。   The airbag main body 15 is formed in a bag shape by a single or a plurality of base fabrics. In the present embodiment, the airbag main body 15 is formed by two base fabrics (the base panel 18 and the occupant side panel 19). The airbag body 15 has a gas introduction opening through which the gas generation part of the inflator 12 is inserted. The shape of the airbag main body 15 and the position and shape of the opening for introducing gas are not particularly limited, and can be set as appropriate according to the specifications of the airbag device 10.

エアバッグ本体１５の基部パネル１８の中心部分と乗員側パネル１９の中心部分とは、バッグテザー２１により連結されている。バッグテザー２１は、単数又は複数の基布により形成されている。バッグテザー２１は、エアバッグ本体１５の奥行方向に対する最大展開長さであるバッグストロークＳＴ（図２参照）を規定する機能を有する。   The central portion of the base panel 18 of the airbag body 15 and the central portion of the passenger side panel 19 are connected by a bag tether 21. The bag tether 21 is formed of one or a plurality of base fabrics. The bag tether 21 has a function of defining a bag stroke ST (see FIG. 2) that is the maximum deployment length of the airbag body 15 in the depth direction.

本実施形態では、エアバッグ本体１５の基部パネル１８に、四角形（長方形）のベントホール１４が形成されている。ベントホール１４は、排気穴とも称されるものである。本実施形態では、ベントホール１４は、基部パネル１８におけるインフレータ１２よりも上方の位置の一カ所に形成されている。また、ベントホール１４の周縁部には、補強用基布２０が接合されている。補強用基布２０は、ベントホール１４とほぼ同じ大きさの開口を有して形成され、ベントホール１４の周縁部に接合されている。ベントホール１４の位置及び形状等は特に限定はされず、エアバッグ装置１０の仕様等に応じて適宜設定することが可能である。   In the present embodiment, a square (rectangular) vent hole 14 is formed in the base panel 18 of the airbag body 15. The vent hole 14 is also referred to as an exhaust hole. In the present embodiment, the vent hole 14 is formed at one position on the base panel 18 above the inflator 12. A reinforcing base fabric 20 is joined to the peripheral edge of the vent hole 14. The reinforcing base fabric 20 is formed to have an opening that is substantially the same size as the vent hole 14, and is joined to the peripheral edge of the vent hole 14. The position and shape of the vent hole 14 are not particularly limited, and can be set as appropriate according to the specifications of the airbag device 10.

蓋体１６は、バルブとも称されるもので、エアバッグ本体１５の膨張展開動作に対応してベントホール１４の開閉を調整する機能を有する。蓋体１６は、単数又は複数の基布により形成される。本実施形態では、蓋体１６は、二枚の長方形状の基布１６ａ，１６ａにより形成されている。具体的には、各基布１６ａの一端１６ｂがエアバッグ本体１５におけるベントホール１４の周縁部に接合され、二枚の基布１６ａ，１６ａの他端１６ｃ，１６ｃ同士が接合されて、蓋体１６が形成されている。このような蓋体１６が、ベントホール１４を跨ぐようにしてエアバッグ本体１５の基部パネル１８に接合される。蓋体１６の大きさや形状は特に限定はされず、エアバッグ装置１０の仕様等に応じて適宜設定することが可能である。   The lid body 16 is also referred to as a valve, and has a function of adjusting the opening / closing of the vent hole 14 corresponding to the inflating and deploying operation of the airbag body 15. The lid body 16 is formed of one or a plurality of base fabrics. In the present embodiment, the lid body 16 is formed by two rectangular base cloths 16a and 16a. Specifically, one end 16b of each base cloth 16a is joined to the peripheral edge portion of the vent hole 14 in the airbag body 15, and the other ends 16c, 16c of the two base cloths 16a, 16a are joined to each other. 16 is formed. Such a lid 16 is joined to the base panel 18 of the airbag body 15 so as to straddle the vent hole 14. The size and shape of the lid body 16 are not particularly limited, and can be appropriately set according to the specifications of the airbag device 10.

連結部材１７は、バルブテザーとも称されるもので、エアバッグ本体１５の膨張展開動作に対応して蓋体１６をエアバッグ本体１５の内部側に引き込む機能を有する。連結部材１７は、単数又は複数の基布により形成される。本実施形態では、連結部材１７は、一枚の長方形状（紐状）の基布１７ａにより形成されている。具体的には、連結部材１７は、一端１７ｂがエアバッグ本体１５の乗員側パネル１９の中心部分に接合され、他端１７ｃが蓋体１６の中心部分（二枚の基布１６ａ，１６ａの他端１６ｃ，１６ｃ同士の接合部）に接合される。連結部材１７の位置及び形状は特に限定はされず、エアバッグ装置１０の仕様等に応じて適宜設定することが可能である。   The connecting member 17 is also referred to as a valve tether, and has a function of drawing the lid body 16 into the airbag body 15 in response to the inflation and deployment operation of the airbag body 15. The connection member 17 is formed of one or a plurality of base fabrics. In this embodiment, the connecting member 17 is formed of a single rectangular (string-like) base fabric 17a. Specifically, one end 17b of the connecting member 17 is joined to the center portion of the occupant side panel 19 of the airbag body 15, and the other end 17c is connected to the center portion of the lid body 16 (other than the two base fabrics 16a and 16a). Joined to the ends 16c and 16c). The position and shape of the connecting member 17 are not particularly limited, and can be appropriately set according to the specifications of the airbag device 10.

連結部材１７の一端１７ｂから他端１７ｃまでの長さＬＮ（図２参照）は、エアバッグ本体１５のフル膨張展開時（バッグ展開完了時）にベントホール１４と蓋体１６との間に隙間ＣＬが形成されるように設定される。このため、連結部材１７は、エアバッグ本体１５のフル膨張展開時にエアバッグ本体１５の外部に位置して、ベントホール１４と蓋体１６との間に隙間ＣＬを形成する余剰長さ部分１７ｅ（図１参照）を有する。具体的には、連結部材１７の一端１７ｂから他端１７ｃまでの長さＬＮが、エアバッグ本体１５のフル膨張展開時における連結部材１７とエアバッグ本体１５との接合部２２からベントホール１４の穴中心ＨＣまでの距離ＤＳよりも長い（ＬＮ＞ＤＳ）。このように連結部材１７の長さＬＮを設定することにより、エアバッグ本体１５のフル膨張展開時にベントホール１４と蓋体１６との間に隙間ＣＬを確保することが可能になる（図２参照）。   The length LN (see FIG. 2) from one end 17b to the other end 17c of the connecting member 17 is a clearance between the vent hole 14 and the lid body 16 when the airbag body 15 is fully inflated and deployed (when the bag deployment is completed). It is set so that CL is formed. For this reason, the connecting member 17 is located outside the airbag main body 15 when the airbag main body 15 is fully inflated and deployed, and the surplus length portion 17e (which forms the gap CL between the vent hole 14 and the lid body 16) ( 1). Specifically, the length LN from one end 17b to the other end 17c of the connecting member 17 is such that the vent hole 14 extends from the joint 22 between the connecting member 17 and the airbag main body 15 when the airbag main body 15 is fully inflated and deployed. It is longer than the distance DS to the hole center HC (LN> DS). By setting the length LN of the connecting member 17 in this way, it is possible to ensure a gap CL between the vent hole 14 and the lid body 16 when the airbag body 15 is fully inflated and deployed (see FIG. 2). ).

エアバッグ装置１０は、さらにステアリングホイールのセンターパッドの外観を備える図示しないエアバッグカバーがエアバッグ１１の膨張展開方向を覆うように取り付けられて、エアバッグモジュールを構成する。   The airbag device 10 further includes an airbag cover (not shown) having the appearance of the center pad of the steering wheel so as to cover the inflation and deployment direction of the airbag 11 to constitute an airbag module.

車両の衝突等の際には、図示しない制御装置によりインフレータ１２が作動され、ガスがインフレータ１２からエアバッグ本体１５の内部に導入される。そうすると、エアバッグ本体１５が、ガスの導入に伴って膨張展開し、エアバッグカバーのティアラインを破断してエアバッグカバーの開口から乗員側に突出する。   In the event of a vehicle collision or the like, the inflator 12 is operated by a control device (not shown), and gas is introduced from the inflator 12 into the airbag body 15. Then, the airbag main body 15 is inflated and deployed as the gas is introduced, breaks the tear line of the airbag cover, and protrudes from the opening of the airbag cover toward the passenger.

以下に、本実施形態による作用効果を説明する。   Below, the effect by this embodiment is demonstrated.

（１）本実施形態に係るエアバッグ装置１０は、ベントホール１４を有する袋状に形成されたエアバッグ本体１５と、エアバッグ本体１５の外部に配設される蓋体１６と、を備える。エアバッグ装置１０は、エアバッグ本体１５の内部に配設され、一端１７ｂがエアバッグ本体１５に接合され、他端１７ｃが蓋体１６に接合される連結部材１７をさらに備える。エアバッグ本体１５のフル膨張展開時にベントホール１４と蓋体１６との間に隙間ＣＬが形成されるように連結部材１７の一端１７ｂから他端１７ｃまでの長さＬＮが設定される。   (1) The airbag device 10 according to this embodiment includes an airbag main body 15 formed in a bag shape having a vent hole 14 and a lid body 16 disposed outside the airbag main body 15. The airbag device 10 is further provided with a connecting member 17 that is disposed inside the airbag body 15, has one end 17 b joined to the airbag body 15, and the other end 17 c joined to the lid body 16. A length LN from one end 17b to the other end 17c of the connecting member 17 is set so that a gap CL is formed between the vent hole 14 and the lid body 16 when the airbag body 15 is fully inflated and deployed.

本実施形態に係るエアバッグ装置１０によれば、エアバッグ本体１５のフル膨張展開時にベントホール１４と蓋体１６との間に隙間ＣＬを確保することが可能になるため、エアバッグ本体１５のフル膨張展開時におけるエアバッグ本体１５の内圧の制御を容易にすることができる。特に、エアバッグ本体１５のフル膨張展開時にベントホール１４と蓋体１６との間に隙間ＣＬが形成されることにより、保護対象物を保護した後、エアバッグ本体１５のフル膨張展開状態から、エアバッグ本体１５の外部にガスを排出する排気モードに速やかに切り替わることが可能になる。   According to the airbag device 10 according to the present embodiment, the gap CL can be secured between the vent hole 14 and the lid body 16 when the airbag body 15 is fully inflated and deployed. Control of the internal pressure of the airbag body 15 at the time of full inflation and deployment can be facilitated. In particular, after protecting the object to be protected by forming the gap CL between the vent hole 14 and the lid body 16 at the time of full inflation and deployment of the airbag body 15, from the fully inflated and deployed state of the airbag body 15, It is possible to quickly switch to an exhaust mode in which gas is discharged to the outside of the airbag body 15.

（２）連結部材１７の一端１７ｂから他端１７ｃまでの長さＬＮは、エアバッグ本体１５のフル膨張展開時における連結部材１７とエアバッグ本体１５との接合部２２からベントホール１４の穴中心ＨＣまでの距離ＤＳよりも長い。   (2) The length LN from the one end 17b to the other end 17c of the connecting member 17 is the hole center of the vent hole 14 from the joint 22 between the connecting member 17 and the airbag main body 15 when the airbag main body 15 is fully inflated and deployed. It is longer than the distance DS to HC.

このように連結部材１７の長さＬＮを設定することにより、エアバッグ本体１５のフル膨張展開時にベントホール１４と蓋体１６との間に隙間ＣＬを確保することが可能になる（図２参照）。   By setting the length LN of the connecting member 17 in this way, it is possible to ensure a gap CL between the vent hole 14 and the lid body 16 when the airbag body 15 is fully inflated and deployed (see FIG. 2). ).

ところで、本発明のエアバッグ装置は前述の実施形態に例をとって説明したが、この実施形態に限ることなく本発明の要旨を逸脱しない範囲で他の実施形態を各種採用することができる。   By the way, although the airbag apparatus of this invention was demonstrated taking the example for the above-mentioned embodiment, it is not restricted to this embodiment, Various embodiments can be employ | adopted in the range which does not deviate from the summary of this invention.

前述の実施形態では、ステアリングホイールに設けられる運転席用エアバッグ装置を例示したが、本発明はこれに限定はされない。本発明は、例えば、助手席前方のインストルメントパネル等に設けられる助手席用エアバッグ装置に適用することも可能である。   In the above-described embodiment, the airbag device for a driver's seat provided on the steering wheel is illustrated, but the present invention is not limited to this. The present invention can also be applied to, for example, an airbag device for a passenger seat provided on an instrument panel or the like in front of the passenger seat.

エアバッグ本体の開閉を調整するベントホールの数は、一つ（単数）に限定はされず、二つ以上（複数）であってもよい。その場合、各ベントホールの位置に応じて、蓋体をそれぞれのベントホールに配設してもよく、一つの蓋体を複数のベントホールに対して配設するようにしてもよい。   The number of vent holes for adjusting the opening and closing of the airbag body is not limited to one (single), but may be two or more (plural). In that case, according to the position of each vent hole, a cover body may be arrange | positioned in each vent hole, and you may make it arrange | position one cover body with respect to several vent holes.

１０ エアバッグ装置
１４ ベントホール
１５ エアバッグ本体
１６ 蓋体
１７ 連結部材
１７ｂ 一端
１７ｃ 他端
１７ｅ 余剰長さ部分
２２ 接合部
ＣＬ 隙間
ＤＳ 距離
ＨＣ 穴中心
ＬＮ 長さ DESCRIPTION OF SYMBOLS 10 Airbag apparatus 14 Vent hole 15 Airbag main body 16 Lid body 17 Connection member 17b One end 17c Other end 17e Excess length part 22 Joint part CL Clearance DS Distance HC Hole center LN Length

Claims (2)

ベントホールを有する袋状に形成されたエアバッグ本体と、
前記エアバッグ本体の外部に配設される蓋体と、
前記エアバッグ本体の内部に配設され、一端が前記エアバッグ本体に接合され、他端が前記蓋体に接合される連結部材と、を備え、
前記エアバッグ本体のフル膨張展開時に前記ベントホールと前記蓋体との間に隙間が形成されるように前記連結部材の前記一端から前記他端までの長さが設定される
ことを特徴とするエアバッグ装置。 An airbag body formed into a bag shape having a vent hole;
A lid disposed outside the airbag body;
A connection member disposed inside the airbag body, having one end joined to the airbag body and the other end joined to the lid;
The length from the one end of the connecting member to the other end is set so that a gap is formed between the vent hole and the lid when the airbag body is fully inflated and deployed. Airbag device. 前記連結部材の前記一端から前記他端までの長さは、前記エアバッグ本体のフル膨張展開時における前記連結部材と前記エアバッグ本体との接合部から前記ベントホールの穴中心までの距離よりも長いことを特徴とする請求項１に記載のエアバッグ装置。   The length of the connecting member from the one end to the other end is greater than the distance from the joint between the connecting member and the airbag body to the center of the vent hole when the airbag body is fully inflated and deployed. The airbag apparatus according to claim 1, wherein the airbag apparatus is long.
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